1D AEMIP Inversion Using MPA Reparameterization for HTEM Survey at Lamego Gold Mine, Quadrilátero Ferrífero, MG, Brazil.

This paper presents the result of the Airborne Electromagnetic Induced Polarization (AEMIP) 1D inversion using the Maximum Phase Angle (MPA) Cole-Cole model reparameterization for a Helicopter Time Domain (HTEM) survey in Quadrilátero Ferrífero area, MG, Brazil. The inversion was conducted for a set of four soundings points over the mineralized structure of Lamego Gold Mine. The results demonstrate good agreement with the drill-hole lithological description data and indicates two polarizable layers: one thin layer associated with the Au-mineralized banded iron formation (BIF) and the other one associated with a thick graphite schist bellow the Au-mineralization. Additionally, the AEMIP inversion results might suggest improvements in the underground resistivity model, which could not be achieved if the non-complex resistivity model is considered.